Swimming fin



FIG. 1 is a top perspective view of my "swimming fin", and showing a difference in color as indicated by different markings between parts of the fin;

FIG. 2 is a bottom perspective view thereof from the opposite side of the fin of FIG. 1;

FIG. 3 is a side elevational view; the opposite side being a mirror image thereof of the fin of FIG. 1; and,

FIG. 4 is a perspective view from the back of the fin of FIG. 1. 

The ornamental design for a swimming fin, as shown and described. 